Valve.



R. BONNELL.

VALVE.

APPLIGATION FILED M1344, 1911.

1,002,491. Patented sept.5,1911.

UNITED STATES PATENT OFFICE.

RUSSELL BONNELL, 0F ELIZABETH, NEW 'JERSEY.

VALVE.

To all whom it may concern:

Be it known that I, RUSSELL BoNNELL, a citizen of the United States,residing at Elizabeth, in the county of Unionand State of New Jersey,have invented certain new and useful Improvements in Valves; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others vskilled in the art towhich it appertains to make and use the same.

This invention relates to valves for steam, water or other fluid; and itconsists in the novel construction and combination of the partshereinafter described and claimed whereby the valve is prevented fromleaking when closed, and whereby a free passage is assured through itwhen open.

In the drawings, Figure 1 is a vertical section through a valveconstructed according to this invention. Fig. 2 is a sectional plan viewtaken on the line m-m in Fig. l. Fig. 3 is a detail front view of thecarrier and one of the valve-plates. Fig. 4f is a side view of thecarrier.'

A is the valve-casing provided with converging valve-seats o.

B are two valve-plates or disks which have projecting flanges c at theirupper edges. These flanges may extend all around the disks, if desired.The valve-plates have also horizontal lugs l on the lower parts of theirbacks.

C is a carrier for the valve-plates having a boss e at its upper partwhich projects through notches 0 in the flanges c, and which forms astop for limiting the upward movement of the valve-plates when raised.This carrier has a screwthreaded hole f which engages with ascrewthreaded stern F which is journaled in a stufIing-box g at theupper part of the casing, and which is provided with a hand-wheel G. Anyother approved means besides the screwthreaded valve-stem may however beused for raising and lowering the carrier and the valveplates, incarrying out this invention. The carrier C is arranged to fit looselybetween the upper parts of the anges c and the lugs CZ on thevalve-plates. On one side, 7L, the carrier is curved vertically from itstop downward, and it is broader at its top than at its bottom. On theother side, z', the carrier is curved horizontally. The backs ofSpecification of Letters Patent.

Application filed April 14, 1911.

Patented Sept. 5, 1911.

Serial No. 621,063.

the two valve-plates are curved to correspond with the sides of thecarrier, one back being curved vertically and the other horizontally.Lugs j are provided on the edges of the valve-plates, at their sideportions, and these lugs slide freely between guide bars J arrangedvertically on the sides of the valve-casing, so that the valve-seats arerelieved of unnecessary pressure and abrasion against the valve-plateswhen the valveplates are being raised and lowered. IVhen thevalve-plates are raised into the upper part of the valve-casing anunobstructed passage is afforded through it. The boss e strikes thecasing and prevents the valveplate from catching against it. Vhen thevalveplates are screwed down they are pressed against the valve-seats bythe carrier which bears on the horizontal lugs cl. As the carrier iscurved in opposite directions, upon its opposite sides, the valve-platesadjust themselves to the valve-seats in all directions, and bearuniformly all around the valve-seats, so that there is no possibility ofany fluid leaking through the valve.

What I claim is:

The combination, with a valve casing provided with convergingvalve-seats, of valveplates having projections on the upper and lowerparts of their backs, one valve-plate having a curved surface extendinghorizontally between its projections and Ithe other valve-plate having acurved surface extending vertically between its projections, each curvedsurface being of relatively large radius and having its middle partarranged in line with the center of the passage through the valve-seats,a wedge-shaped carrier arranged between the said valve-plates andengaging with their projections, said carrier being thickest at themiddle of its upper part and having one side face curved horizontallyand the other side faoe curved vertically to correspond with the curvedsurfaces of the valve-plates, and means for raising and lowering thesaid carrier and valve plates in the casing.

In testimony whereof I have affixed my signature in the presence of twowitnesses.

RUSSELL BONNELL.

Witnesses:

ALBERT D. LILLEY, PAUL A. KLINE.

Copies of this patent may be obtained for iive cents each, by addressingthe Commissioner of Iatents, Washington, D. C.

